Ported/Coated Manifolds(heavy pics)

[Blown09]

First and foremost, these are going on to replaced warped manifolds with broken studs, anything past that is a bonus.

I picked up a set of used manifolds a couple months back to clean up and swap with my warped ones when I replace broken studs. I wanted a used set as they have seen many heat cycles and have relaxed to their final state. Took a straight edge to them and was baffled. Didn’t grab a pic of it, but it’s no wonder studs snap on these so often, as there was enough gap on the two end ports to stick a penny in. So, diy’d it and put them on the belt sander. Took a bit, but turned out great, only about 3-5 thou now….well within the realm of normal. Naturally, being the type to never leave good enough alone, I figured it would be a good time to open the ports up a tiny bit. Having ported a many intake manifold and exhaust manifold, these were fairly straight forward. I didn’t touch the main “log” portion, and just focused on the “ins&outs”. Did not gasket match, but did open the primaries up a bit to help reversion some more, but mainly focused on trying to keep diameters constant through the port. The outlet was where the majority of the work was focused, and where most of the gains(if any-these ports are just too small to begin with) should come from. Overall, I pulled out close to 1.75lbs over material.

Took them to the media blaster and prepped for some diy ceramic coating. Utilized Por15 manifold paint(extremely good stuff-not exactly happy with color tho) and a micro ceramic additive for paint, both of which are rated for 2000°f. Coated exterior first, cured, and repeated for the interior as well. I’ll most likely hit these with a high temp flat grey before they go in, as that aluminum color was WAYYYY brighter than expected.

They have yet to go on… as I don’t want to burn the truck down after getting frustrated drilling studs out lol, so I’ve been procrastinating. I was honestly thinking about pulling the heads and just doing them on the bench. But that quickly turned into, welllllll since im in there….. and well, we all know that rabbit hole. Point is, when I do tackle them, I’ll post up results, bad or good. I’ll datalog the truck before and after to see if there’s any airflow improvements.

And yes, I did toss around the idea of buying shorties for the mustang and modifying them to fit. But, being how cramped things are in there I really only want to do this one time. Would hate to put a few thousand miles on those and have a crack form and have to do it all over again. Moreover, with a boosted engine, the characteristics of exhaust flow(ie scavenging) is not nearly as important compared to na… not that shorties do the scavenging bit all that well to begin with, but you get my point. Big ole hefty manifolds=Pretty much worry free.

Anyhoooooooo, (finally)onto the pics!

 

[FoMoCoMotion]

Wow, almost Teen-Honda bright!

 

[Todd Z]

machine flat, and use the upgraded studs...

 

[Mike S 3]

Todd, curious about hte upgraded studs, are they arp? have a link? my '10 manifolds are OK still, but after 140k miles the heat shields are deteriorating and they are showing their age

 

[Todd Z]

I don’t but they were the ones Ford tech M on YouTube Recomended. Copper coated I believe.
Also I would not just change studs arbitrarily. If they snap you’re doing the whole job now.

 

[Blown09]

Dorman 03412
You’ll need two kits.